203225664 has 56 divisors (see below), whose sum is σ = 539971488. Its totient is φ = 67456000.

The previous prime is 203225657. The next prime is 203225669. The reversal of 203225664 is 466522302.

It is not an unprimeable number, because it can be changed into a prime (203225669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46084 + ... + 50300.

It is an arithmetic number, because the mean of its divisors is an integer number (9642348).

Almost surely, 2^203225664 is an apocalyptic number.

203225664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203225664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269985744).

203225664 is an abundant number, since it is smaller than the sum of its proper divisors (336745824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203225664 is a wasteful number, since it uses less digits than its factorization.

203225664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483 (or 4473 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 203225664 is about 14255.7239030503. The cubic root of 203225664 is about 587.9307614340.

Adding to 203225664 its reverse (466522302), we get a palindrome (669747966).

The spelling of 203225664 in words is "two hundred three million, two hundred twenty-five thousand, six hundred sixty-four".